Airtac MSF Single Acting Mini Cylinder MSF40X80U
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X80U is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 80mm stroke, 1/4" air ports and a SUS304 stainless-steel barrel for mildly corrosive environments. For the same bore and stroke it is shorter than an ISO 6432 cylinder, saving mounting space.
- BoreØ40 mm
- Stroke80 mm
- Port size1/4"
- Acting typeSingle acting, push (spring return)
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
About the Airtac MSF Single Acting Mini Cylinder MSF40X80U
Delivering 535.3 N of push force at 0.5 MPa, this AirTAC MSF40X80U is a JIS-standard round-body mini cylinder built for single-acting operation. Air extends the 16 mm rod through an 80 mm stroke, while an internal spring handles the retraction. Because you only plumb the 1/4 inch port, valve complexity drops, and the rod safely springs back if air pressure is lost. The SUS304 stainless barrel shrinks mounting length compared to an ISO 6432 unit while resisting mild washdown.
The quoted output is already net of the return spring, meaning you get the true usable thrust. For sizing, a safe working load sits around 321 N, or it can vertically clamp about 27 kg with a 2:1 margin. This SKU lacks the -S magnet, so it cannot host CMSG or DMSG switches, and it features a flat U back cover.
Airtac MSF Single Acting Mini Cylinder MSF40X80U Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X80U |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Cushion | Fixed TPU bumper pads |
| Max standard stroke | Up to 150 mm |
Specifications follow the official AirTAC MF/MFC (JIS-standard) datasheet. Barrel: SUS304 stainless steel; covers: aluminum alloy (round-body, riveted rolling-packed construction). Thread options: PT (blank) / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force (spring return) |
|---|---|
| 0.5 MPa | 535.3 N |
| 0.7 MPa | 786.5 N |
Single-acting push: air extends the rod; the return spring retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa.
Model Code: Airtac MSF Single Acting Mini Cylinder MSF40X80U
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MF-family variants: MF / MFC (double acting ±cushion), MSF / MTF (single acting push / pull), MFD / MFCD (double rod ±cushion), MFJ / MFCJ (adjustable stroke ±cushion). Back covers CA / U / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MSF Single Acting Mini Cylinder MSF40X80U Is Used
Heavy Part Ejection
Uses the 535.3 N thrust to positively eject dense machined metal components from a fixture before the spring resets the rod.
Secure Clamping
Holds workpieces weighing roughly 27 kg with a 2:1 safety margin, automatically releasing to the retracted position on air loss.
Gate Actuation
Pushes a diverter gate out to block product flow, relying on the spring to pull the barrier clear when the system exhausts.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X80U the Right Cylinder?
When sizing this 40 mm bore, step down to the MSF32 if 323.3 N at 0.5 MPa is sufficient, as there is no larger MSF bore available. You must supply at least 0.2 MPa of air to overcome the internal spring before any outward movement occurs. This single-acting format is ideal for simple clamping or ejecting tasks where the load cannot push back against the return stroke. Mount it via LB foot, FA flange, or TC trunnion hardware, and remember that magnetic sensing requires the -S variant.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MSF Single Acting Mini Cylinder MSF40X80U FAQ
It generates 535.3 N of thrust at 0.5 MPa and 786.5 N at 0.7 MPa. You must provide at least 0.2 MPa of pressure to overcome the internal return spring. The cylinder uses a 1/4 inch port and a 16 mm rod with an M14x1.5 thread.
No, this specific SKU does not include a magnet. You must select the -S version to use CMSG, DMSG, or EMSG switches. Additionally, the internal spring drives the rod to the retracted position on air loss, so it will not hold a mid-stroke load.
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